/Engine/Source/Runtime/Engine/Classes/Engine/TextureLightProfile.h
class UTextureLightProfile : public [UTexture2D](API\Runtime\Engine\Engine\UTexture2D)
float
Brightness
Light brightness in Candelas, imported from IES profile, <= 0 if the profile is used for masking only.
float
TextureMultiplier
Multiplier to map texture value to result to integrate over the sphere to 1.0f